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LC5200 데이터시트(PDF) 2 Page - Allegro MicroSystems |
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LC5200 데이터시트(HTML) 2 Page - Allegro MicroSystems |
2 / 15 page 2 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 48102.002 LED Drivers LC5200 Series Recommended Operating Conditions Characteristic Symbol Conditions Min. Typ. Max. Unit Supply Voltage VBB Lowest voltage can vary depending on LED loads 25 – 400 V Average Output Current IO LC5205D – – 0.4 A LC5210D – – 0.8 A REF Input Voltage VREF In normal operation – – 0.5 V Case Temperature TC Measured at center of case, TJ < 150°C – – 105 °C Absolute Maximum Ratings at TA = 25°C Characteristic Symbol Notes Rating Units Supply Voltage VBB 450 V Output Breakdown Voltage VO 450 V Output Current IO LC5205D, tw ≥ 1 μs 0.5 A LC5210D, tw ≥ 1 μs 1.0 A REF Pin Input Voltage VREF –0.3 to VREG + 0.3 V SENSE Pin Voltage VRS tw ≥ 1 μs±2 V Allowable Power Dissipation PD On Sanken evaluation PCB; affected by applica- tion PCB layout 1.73 W Junction Temperature TJ 150 ºC Operating Ambient Temperature TA –40 to 105 ºC Storage Temperature Tstg –40 to 150 ºC Selection Guide Part Number Output Current, IO(max) (A) LC5205D 0.5 LC5210D 1.0 All performance characteristics given are typical values for circuit or system baseline design only and are at the nominal operating voltage and an ambient temperature of 25°C, un- less otherwise stated. Terminal List Table Name Number Function Reg 1 Regulator output pin for powering external components. Connect 0.1 μF bypass capacitor between this pin and GND. Toff 2 For self-oscillation operation, connect external capacitor and resistor to set off-time. For externally-controlled PWM operation, input PWM adjustment signal. Ref 3 Reference voltage input pin, for output peak current. Sen 4 Connect external resistor for PWM peak current control and OCP. OUT 5 Internally connected to the MOSFET drain, output connection to LED load. VBB 6 Supply voltage pin; internally connected to the voltage regulator to power the internal circuits. – 7 No connection; pin removed to increase creepage distance from VBB pin. GND 8 Device ground pin. Pin-out Diagram 1 2 3 4 8 7 6 5 GND (Removed) VBB OUT Reg Toff Ref Sen |
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